#!/user/bin/env node

const stdin = process.stdin,
      stdout = process.stdout;

stdin.setEncoding('utf8');

stdin.on('data',(data)=>{
  stdout.write(data.toUpperCase());
});

stdin.push('world\n');
//stdin.push(null);
//stdin.pipe(stdout);

let i='a'.charCodeAt(0);
  for(i;i<'z'.charCodeAt(0);i++){
  stdout.write(String.fromCharCode(i));
}

//stdin.push(null);
